to start off I'm going to take a pregnancy test but i got a few questions. lately I've been feeling bloated (tight stomach and burping a lot) .. tender breasts. I've been cramping like usually as if I'm about to start my period. me and my boyfriend had sex 2 days (9th) before i was supposed to start my period (11th).. it's not the 19th and i still haven't got my period. the last time this happened i missed my period for 2 months. can sex delay your periods if you have sex before you're supposed to start?? are my symptoms normal?